ok, so im dual booting with xp and vista ultimate. however my cd drives are acting up so i thought i would update the fw on them in xp. so i changed my default OS in vista to xp so it would get into xp. now when im in xp it doesnt give me the option to change my defualt to visita. also, when it gets the prompt to select what OS i want, xp or vista, i cant move the cursor at all. tried it with the up down arrows, left right, alt, tab, everything. please help me figure this out ASAP.